How to get text from AutoCompleteTextView?

Yeah... unfortunately the name of the parameters on the onItemClick method you must implement are not so self-descriptive but here is an example with the names of what they are:

autoCompleteTextView.setOnItemClickListener(new OnItemClickListener() {
    public void onItemClick(AdapterView<?> parent, View view, int position, long rowId) {
        String selection = (String)parent.getItemAtPosition(position);
        //TODO Do something with the selected text
    }
});

• parent The AdapterView where the click happened.
• view The view within the AdapterView that was clicked (this will be a view provided by the adapter)
• position The position of the view in the adapter
• id The row id of the item that was clicked.

For more info see: http://developer.android.com/reference/android/widget/AdapterView.OnItemClickListener.html

arg0 being your AdapterView and arg2 the position.

Have you tried:

arg0.getItemAtPosition(arg2);